Physical - Circuit Essay Example for Free

Physical Circuit EssayLength (centimetres) potential difference (Volts) latest (amps) electromotive force (Volts) accepted (amps) Voltage (Volts) live (amps)Length (centimetres) Voltage (Volts) Current (amps) opponent (? ) As the fudge shows above, the oppositeness of the duration 5cm and 10cm were equal, and then it short decreases.This shows thithers an illusion I telephone it happened be nominate we didnt set our circuit in the correct positon. Table 5 This prorogue shows the details about normal wires used in the experiment, Constantan wire with diameter of 0. 90mm, however is long-term than the one before, retry. First tried and true twinkling Tried Third Tried Length (centimetres) Voltage (Volts) Current (amps) Voltage (Volts) Current (amps) Voltage (Volts) Current (amps) Length (centimetres) Voltage (Volts) Current (amps) Resistance (? ).This seems to be good ensues as it shows the oppositeness were rising up slowly as the aloofness grows. It proved th is is a expert experiment, and let us understand this wire could be use for transferring the veritable through. Table 6 This table gives the results about the different kind of wires used in the experiment, Nichrome wire with diameter of 0. 90mm.First Tried Second Tried Third Tried Length (centimetres) Voltage (Volts) Current (amps) Voltage (Volts) Current (amps) Voltage (Volts) Current (amps) Length (centimetres) Voltage (Volts) Current (amps) Resistance (? ) This graph shows a very clear results, the increase of resistance were easy to see, from the positive correlation shown. This core that this is quiet a good test, it dont seems to bring on any fracture in this experiment.Table 7 This table gives the details about the third wires used in the experiment, sloven wire with diameter of 0. 90mm. First Tried Second Tried Third Tried Length (centimetres) Voltage (Volts) Current (amps) Voltage (Volts) Current (amps) Voltage (Volts) Current (amps) Length (centimetres) Voltage (Vol ts) Current (amps) Resistance (? ) This result shows the metal which poop transfer the least resistance through by the differences of the length.It was mostly under , this intend that we cant use this much as the time were transferring a large arrive of currents. Table 8 This table have the results which horseshit wires were heated in the beaker of water. equip length equals to 100cm long. Room temperature were 24Ci. First Tried Second Tried Third Tried Temperature (Ci ) Voltage (Volts) Current (amps) Voltage (Volts) Current (amps) Voltage (Volts) Current (amps) Temperature (Ci)Voltage (Volts) Current (amps) Resistance (? ) The last experiment we done, by putting a wire with length 100cm, diameter of 90mm into boiling water. Our result shows more(prenominal) clear on the table than the graph. As we can see, the resistance only raise a numeral as the temperature goes up. But the difference from 30 Ci to 50 Ci were higher than what I expect, I think this is because of the tempe rature were not fix while we were recording our results discomfit to our table. Compare and Contrast.This is the averages of the 3 wires. By showing this on a graph we could be able to rank which wire has the highest resistance. Constantan Wire Copper Wire Nichrome Wire Length (centimetres) Resistance (? ) Length (centimetres) Resistance (? ) Length (centimetres) Resistance (? ) By reading the graph, we could see that Nicrhome Wire have the highest resistance out of the ternary wires, so we could fork that it can allows least current lean through each time examine to the rest of them.If one day we have to take a wire from this three to pass current through, the best is using the Copper Wire, it got the lowest resistance which means it have a high amount of current can pass through per second. If we dont want the electricity to flow through easily, we will choose the Nichrome Wire, because it only allows small amount of current to pass through each time. Constantan Wire was a normal wire, it cant be use for high resistance flowing, unless it can allow more current flow at each time compare to the Nichrome Wire.However, we could see that the resistance were rising up no matter which materials of wire we have chosen, so that means they still conduct electricity, so we shouldnt commove it while having this kind of experiment. Compare and Contrast 2 This is the averages of the 3 different diameters of wires. By showing this on a graph we could be able to enounce that which diameters can allows the most resistance to pass through. Wire with 0. 45mm Wire with 0. 9mm Wire with 1. 25mm Length (centimetres) Resistance (? ) Length (centimetres) Resistance (? ) Length (centimetres) Resistance (? ).By looking at at the graph, we could see that Constantan Wire with 0. 45mm of diameter have the highest resistance out of all. So we could tell that it can allow high amount of resistance but low amount of current flow through each time compare to the rest of them. Th e wire with diameter of 1. 25mm can allows the lowest resistance, that means it could have highest current to flow through each time. However, we could see that the resistance were rising up no matter which diameter of wire we have chosen, so that means they still conduct electricity, so we can use it to let current pass through.Evaluation In my experiment, Ive found out theres some actus reus occurs. In my first results, by using the length of 15cm, the resistance seems to be a little bit different from the rest, so it didnt showed as a straight line. This energy because my circuit werent set correctly, so this error occurred. For the second experiment I did, theres seems to be a error at the second try of length 10cm, the number seems to be too high compare to the rest of them, I believe this happened because we accidentally pall the variable resistor.Then in Table 3 we got an error again, the current of the wire seems to be a lot more higher, Im trustworthy this occurs becaus e the resistor is not working well, and also the circuit were kind of messy, faculty affect the results we got. Then we got an error results shows at Table 4, none of the results can fit with Table 3, there were the same wire, same diameter, only the length we tested is different, but the results we got were too out of range, so I can say that this is a failed try out.So we re-do the experiment using this wire again. I think that this happened because the ammeter is down, the current were keep increasing by every few seconds. In Table 8, for testing the temperature, it seems to be a nice results, however the different of 50Ci and 30Ci were larger than what I have expect, so I could tell that the temperature of the water big businessman not be as accurate as the time we measured. Also it tycoon because some water spread out of the beaker, onto the wires this should be changing my normal results.Also, Im not really sure about how the resistor works with ammeter therefore by acciden tally move it might decrease the the true of my results as well. The results of resistance might be different because the circuit we set werent exactly the same, therefore it might also be some differences compare to the first time, the first results we got. So, maybe next time we should have used the same circuit, and do all of the experiment in same time, and it might have a better results in future. Conclusion.In my own opinion, I believe this is quiet a nice experiment, and I also get some good results as well. Ive found out that my prediction was correct, about the copper wire with a diameter of 90mm will transfer the least energy compare to the rest of the two. I also learned about the circuit of electricity, I could now tell how the current flowing was, and how it could be measured. By looking at the results Ive got, I was really please, even though some mistakes happened in the experiment, but we still success to finish our experiment in the time limit, which is such a grea t affair to celebrate.Resistor can be use to protect the ammeter, this is a very useful apparatus I know the ammeter was an important character in the circuit while measuring the resistance. So if the ammeter were damage cause of the flowing current were too high, this will be a very bad news for us. So take care of the equipment is another important thing I learn from this experiment. If I have a chance to repeat the experiment, I would be desirely to set my circuit up just like this time, because there shall be less problems.And I might use the copper wire more much in the circuit, using copper wires it allows more current to pass through compare to the Nicrhome and Constantan wires, which might help in my future life.Bibliography http//en. wikipedia. org/wiki/Series_and_parallel_circuits http//www. circuitcity. com/ccd/home. do Science Investigation Report Daniel F5D 1 Show poke only The above preview is unformatted text This student written piece of work is one of more that can be found in our GCSE Electricity and Magnetism section.